diff --git a/index.d.mts b/index.d.mts
new file mode 100644
index 0000000..fcb9204
--- /dev/null
+++ b/index.d.mts
@@ -0,0 +1 @@
+export * from './index.js'
diff --git a/package.json b/package.json
index 04dbde6..24a357a 100644
--- a/package.json
+++ b/package.json
@@ -19,17 +19,23 @@
   "main": "./dist/cjs/index.js",
   "module": "./dist/esm/index.js",
   "browser": "./dist/umd/i18nextV4FormatConverter.js",
-  "types": "./index.d.ts",
+  "types": "./index.d.mts",
   "exports": {
     "./package.json": "./package.json",
     ".": {
+      "types": {
+        "require": "./index.d.ts",
+        "import": "./index.d.mts"
+      },
       "require": "./dist/cjs/index.js",
       "default": "./dist/esm/index.js"
     },
     "./cjs": {
+      "types": "./index.d.ts",
       "default": "./dist/cjs/index.js"
     },
     "./esm": {
+      "types": "./index.d.mts",
       "default": "./dist/esm/index.js"
     },
     "./src": {
@@ -41,7 +47,7 @@
   },
   "scripts": {
     "lint:javascript": "eslint .",
-    "lint:typescript": "eslint -c .ts.eslintrc *.d.ts test/types/**/*.test-d.ts",
+    "lint:typescript": "eslint -c .ts.eslintrc *.d.ts *.d.mts test/types/**/*.test-d.ts",
     "lint": "npm run lint:javascript && npm run lint:typescript",
     "build": "rm -rf dist && rollup -c && echo '{\"type\":\"commonjs\"}' > dist/cjs/package.json",
     "test:deno": "deno test test/deno/*.ts --reload --no-check",
diff --git a/tsconfig.json b/tsconfig.json
index 0b29b93..8c19033 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -8,6 +8,7 @@
   },
   "include": [
     "/test/types/*.test-d.ts",
-    "/*.d.ts"
+    "/*.d.ts",
+    "/*.d.mts"
   ]
 }